// 最简单的箭头函数

let wel = msg => msg + '您好';

console.log("wel的调用" + wel('唐洛凡'))
console.log('箭头函数中有多个参数的场景');
let wel2 = (a,b,c) => a*b*c;

console.log('wel2 的调用' + wel2(3,4,5));

console.log('箭头函数中没有参数，直接括号就好了');
let wel3 = () => '欢迎您。。。'

console.log('空箭头函数的调用:'+wel3());

lt = []
lt[0] = 1;
console.log(lt);